Wire-cutter



(No Model.)

I R. HAYDEN.

. WIRE (BUTTER. No. 349,496. Patented Sept. 21, 1886.

.- UNITED STATES PATENT OFFICE.

RANDOLPH HAYDEN, OF HADDAM, CONNECTICUT.

WIRE-CUTTER.

SPECIFICATION forming part of Letters Patent No. 349,496, datedSeptember 21, 1886.

' Application filed March 19, 1886.

To all whom it may concern:

Be it known that I, RANDOLPH HAYDEN, a citizen of the United States,residing in Haddam, in the county of Middlesex and State of Connecticut,have invented certain new and useful Improvements in Wire-Cutters, ofwhich the following is a specification, illustrated by the accompanyingdrawings.

My invention relates to that class of wirecutting pliers which areprovided with separable or removable cutters mounted contiguously in orbetween the pivoted jointplates; and the object is to increase thestrength of such pliers without increasing their size or weight, toprovide a tool in which theeutters may be readily reversed, and toreduce the cost of manufacture by diminishing the labor and materialexpended in their manufacture. To accomplish these objects I constructand apply my invention in the manner shown in said drawings, in which-Figure 1 is a front View of my improved wire-cutter with jaws open. Fig.2 is an edge View of the same. Fig. 3 is an edge view of my improvedwire-cutter with the jaws shut. Fig. 4 is a section on a a in Fig. 1.Fig. 5 is a front view of one leg and joint-plate of said wire-cutter.Fig. 6 is a front view of the removable blade or cutter of the same; andFig. 7 is a front view of the head of said wire-cutter modified byrounding off its edges.

In these figures, A and A are two jointplates, which are formed of ironor steel in a single pattern, are provided with legs B and B,respectively, and with arms or pinchingjaws C and C in the usual manner.PlatesA A also have marginal slots S S, and are con trally pivoted uponscrew D. Each of these plates is hollowed out on the ,inner side by atransverse channel, E, having parallel sides F F, and a suificient depthto contain the cutter G, hereinafter mentioned. This channel extendsfrom side to side of each joint-plate, in the manner illustrated in Fig.5.

G G are two cutters, being plates of tem-' pered steel, formed of oneand the same size and shape, and having terminal slots H H, whichconstitute the shearing-jaws of this tool. The cutters G G are fittedsnugly into the channels E of both joint-plates, and are securely heldtherein by the pivot-screw I), which passes Serial No. 195,800. (Nomodel.)

through central perforations therein. The slots S S in the joint-platesare diametrically opposite each other, and the slots H H in the outter-plates are so located that they coincide with the slots S S when theparts are put together. Preferably, I form the slots H H neardiagonally-opposite corners of the plates G G, in order to make thecutting-jaw, which is on the wider side, as strong as possible.

The nearest approach to my construction of which I have any knowledge isa tool in which the cutters are circular, and are fitted into circularrecesses in the joint-plates, and are held against rotation by lugs onthe walls of the circular recesses, which fit into corresponding notchesin the disks.

The advantages of my construction are that the straight walls of thetransverse channels E E receive the strain put upon the jaws in cuttingupon opposite sides of the pivot, which adds materially to the strengthand durability of the cutters; also, by leaving themetal be tween thefront wall of the channel E and the plier-jaw, the strength of thelatter is mate: rially increased 5 and by my construction the cuttersmay be reversed or turned end for end, should it be found desirable (asit often will be) to do so.

Such being the construction of my improved wire-cutter, the mode of itsoperation is similar to that of all other wire-cutters of the samegeneral class above specified. It is to be observed, however, that thecutters G G, being of the general form of a parallelogram with roundedends, can be cut from steel plates with greater economy of labor andstock than has been attained in forming cutters of any other practicableform. The form of the cutters G G also allows the joint-plates A A tocontain abundant material, and consequently abundant strength in thatpart in which jointplates of this general character have hereto forebeen practically weakestnamely, in that part of the joint-plate whichlies between leg B or B and screw D; also screw D holds the" cutters G Gfirmly in position in channels E E, without the aid of any additional orspecial device whereby to prevent the rotation ofcutters G G within saidchannels; and, again, the form of cutters G G is such that a new cuttercan be made and. inserted in the tool by any .machinist very easily andquickly, when desired.

. I claim as my invention, and desire to secure by Letters Patent 5 1.In a tool of the character described, the jaw-plates A A, provided ontheir inner faces with transverse channels E 1 having straight parallelwalls, in combination with the cutters G G, fitting said channels, andeach provided ID with a central opening to receive the pivot D, by whichthe joint-plates are united, substantially as shown and described.

2. In atool of the characterherein described,

the joint-plates A A, provided on their inner I 5 faces with transversechannels E E, having straight parallel walls, and at opposite sides\Vitnesses:

WVILLARD EDDY, GEORGE G. VA'ILKLEY.

